I think the fuse blew before I hooked it up to CJ amp, which was playing fine in a friend’s house. This speaker had lower bias for a long time compared to the other one. When I exchanged the fuse with the other speaker, this bias supply must have burned the fuse from the working speaker. I don’t think it is the amp, because the speaker sounded very weak from the get go. Everyone on the SLOG should look out for this possibility if it happens.